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@with tatrs atwt @Hita G. D. SPOONER, OF RUTLAND, AND L. N. JOHNSON, OFBRANDON, VERMONT,

Letters Patent No. 67.458, dated August e, 1867.

IMPROVEMENT IN GARPENTERS PLANES.

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TO ALL WHOM IT MAY CONCERN:

'Be it known that we, G. D. SPOONER, of Rutland, and L. N. JOHNSON, ofBrandon, both in the county of Rutland, and in the State of Vermont,have invented a. new` and useful improvement Ain Planes; and we dohereby declare that the following is a full, clear, and exactdescription thereof, which will enable those skilled in the art to makeand use the same, reference being had to the accompanying drawing,forming part of this. specication, in which drawing- Figure 1 representsa. longitudinal vertical section of the invention.

Figure 2 is a sectional plan or top view of the same.

Similar letters of reference indicate corresponding parts.

l This invention relates to a plane in which the bit or plane-iron issecured by means of a set-screw to a cross-head, which is adjustable bymeans of a thumb-serew in a slotted plate fastened to the stock of theplane, and which is provided with yshoulders in such a manner that whenthe set-screw-which forms the connection between the plane-iron and thecross-head is released, the cutting edge of the plane-iron can bereadily adjusted in the required position by turning the thumb-screw,andv by screwing up the set-screw the plane-iron is firmly retained inthe required position.

A represents the stock of our plane, which is made of woodor any othersuitable material. This stock is provided with a cavity to receive ametal plate, B, which is rmly secured to the stock, and the outersurface of which is in line with the inner surface of the throat of theplane, as clearly shown in iig. 1 of-the drawing. The plate B isfurnished with a slot, a', which forms the guide for the cross-head C,which is provided with lips, b, projecting over the inneredges of theslot a, as shown in fig. 2. When the cross-head is in position in theslot a its outer surface or face is slightly below the outer surface ofthe plate E, and said cross-head is tapped to receive the set-screw c,which forms the connection between the plane-iron D and the cross-head.If the set-screw is screwed up it draws the cross-head up against theinner surface of the plate B, and at the sume time it presses theplane-iron down tight against the outer surface of said plate and holdsthe same firmly in position. If the set-screw c is released thecross-head C can be moved up or down in the slot a by means of thethumb-screw E, the upper end of which is provided with a journal whichhas its bearing in a forked lug, d, projecting from the inner surface ofthe plate B, being retained therein by a pin, e, or in any othersuitable l manner, while the screwshank of said thumb-screw is tappedinto the cross-head, as shown in the drawing. If the set-screw c isreleased, therefore, the cutting-edge of the plane-iron can be readilyadjusted in the desired position, and said plane-iron can also be turnedso as to bring its cutting edge square with the sle of the plane, andafter it has been so adjusted the set-screw is screwed up tight and theplane-iron is firmly retained in posii tion. A cap, F, may be attachedto the plane-iron by scrcwsf, which do not interfere with the motion ofthe plane-iron on the plate B. This arrangement is very simple, and itobvia-tes all complicated and costly mechanism for` retaining theplanen-iron in position after the same has been adjusted in the requiredposition by the action of the thumb-screw, no chai-.go in or' attachmentto the ordinary plane-iron being required in order to l adapt it to ourimprovement. I

We are aware of a plane described in Letters Patent of J. F. Palmer,February 3, 1857, which bears some resemblance to ours. He uses athumb-screw like ours, but the nut of his thumb-screw is stationary, andin order to givel motion to the plane-iron he attaches' to the same afork which catches in a neck of the thumbscrew; and furthermore, hisplane-iron must be provided with a slot to admit the set-screw. ln ourplane an ordinary plane-iron can be used, nothing being needed brit a.simple round hole to admit the set-screw, so that if the plane-iron isworn out it can be readily replaced.

What we 4claim as new, and desire to secure by Letters Patent, is

The sliding cross-head C, provided with shouldcrsb, which bear againstthe inner surface of the plate B, said cross-head being Vmade to receivethe set-screw c and the thumb-screw E, which catches in a forked lug ci,projecting from the inner surface of the fixed plate B, to operate 'incombination with the plane-iron D, as and for the purpose described.

G. D. SPOONER,

L. N. JOHNSON.

Witnesses:

W. G. VEAZEY, E. J. HAnrsnonN.

